Have Frame::navigationScheduler() return a reference

Source/core/html/parser/HTMLDocumentParser.cpp

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 270 matching lines @@
             return false;
     }
 
     // FIXME: It's wrong for the HTMLDocumentParser to reach back to the
     //        Frame, but this approach is how the old parser handled
     //        stopping when the page assigns window.location.  What really
     //        should happen is that assigning window.location causes the
     //        parser to stop parsing cleanly.  The problem is we're not
     //        perpared to do that at every point where we run JavaScript.
     if (!isParsingFragment()
-        && document()->frame() && document()->frame()->navigationScheduler()->locationChangePending())
+        && document()->frame() && document()->frame()->navigationScheduler().locationChangePending())
         return false;
 
     if (mode == AllowYield)
         m_parserScheduler->checkForYieldBeforeToken(session);
 
     return true;
 }
 
 void HTMLDocumentParser::didReceiveParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk> chunk)
 {
@@ skipping 102 matching lines @@
         m_textPosition = (*it)->m_textPosition;
         m_xssAuditorDelegate.didBlockScript(**it);
         if (isStopped())
             break;
     }
 
     for (Vector<CompactHTMLToken>::const_iterator it = tokens->begin(); it != tokens->end(); ++it) {
         ASSERT(!isWaitingForScripts());
 
         if (!isParsingFragment()
-            && document()->frame() && document()->frame()->navigationScheduler()->locationChangePending()) {
+            && document()->frame() && document()->frame()->navigationScheduler().locationChangePending()) {
 
             // To match main-thread parser behavior (which never checks locationChangePending on the EOF path)
             // we peek to see if this chunk has an EOF and process it anyway.
             if (tokens->last().type() == HTMLToken::EndOfFile) {
                 ASSERT(m_speculations.isEmpty()); // There should never be any chunks after the EOF.
                 prepareToStopParsing();
             }
             break;
         }
 
@@ skipping 534 matching lines @@
         m_parserScheduler->suspend();
 }
 
 void HTMLDocumentParser::resumeScheduledTasks()
 {
     if (m_parserScheduler)
         m_parserScheduler->resume();
 }
 
 }